Chapter 3 Installing the TimeSource 3100
Making Cable Connections
64 TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005
Figure 3-16. Connector Layout of ESCIU Modules
Cutover Procedures for Out-of-Service Equipment
If DDF access jack sets are not cabled to the ESCIU module, the following
out-of-service cutover procedure must be used. Consult the local company
Installation Job Specifications to ensure that the network element to be re-timed is
connected to the ESCIU module correctly. Refer to Figure 3-17 for the following
procedure:
1. Remove from service (turn down) the traffic trunks on the E1 system to be
cutover to the ESCIU module.
2. Remove the existing cabling in both directions between the transmit (OUT) and
receive (IN) terminals of the NEs that will connect to the ESCIU module.
3. In the direction not to be synchronized by the ESCIU module, connect new
cables from the ESCIU module RTNx IN connector to the NE transmit (OUT)
terminal, and connect from the ESCIU module RTNx OUT connector to the NE
receive (IN) terminal.
4. In the direction to be synchronized by the ESCIU module, connect new cables
from the ESCIU module IN connector to the NE transmit (OUT) terminal, and
connect from the ESCIU module OUT connector to the NE receive (IN) terminal.
5. Verify that there are no alarms on the NEs on the E1 system. If there are alarms,
recheck the new cabling between the NEs and the ESCIU module.
6. Restore (turn up) the traffic trunks to service.
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